When it comes to writing in English, many people often get confused about whether to write Eachother or Each other. The Correct choice is always Each other, as it represents a mutual action or feelings between two people or things.
Using Eachother as one word is Incorrect and can make your writing look careless or unprofessional. I’ve noticed that even students, professional writers, and learners sometimes stumble over this, especially when the words are spoken quickly or in social media posts, emails, or messages.
At first glance, the words may seem almost identical, which creates real confusion, but understanding their usage can solve the problem clearly. Spelling errors often happen because sound and form can feel the same, yet the meanings are different, and even compound words like everybody do not combine in the same way as Each other.
The rule is simple: always Use two separate words when referring to mutual actions, whether siblings shared secrets, looked at each other with understanding, or when talking about another person.
This guide helps students, casual or professional writers save time and avoid confusions in formal writing, articles, blogs, business communication, or even FAQs and trend insights. The correctness of Each other polishes your writing, sharpens your understanding, and even packs a punch in clarity, whether in British or American usage.
Over time, you will confidently remember, tackle, and use this phrase in every context, avoiding minor mix-ups or common mistakes, and enjoying the nuances of English Books, Literature, and everyday communication.
What Does “Each Other” Mean?

“Each other” is a phrase used to describe a mutual action or relationship between two or more people or things. Whenever two individuals perform the same action toward one another, we use this expression.
For example:
- John and Mary respect each other.
- The cats groom each other after playing.
In plain English, it signals reciprocity. It’s not a single word, so spelling it as “eachother” is incorrect. Understanding this small detail can prevent a lot of common grammar mistakes.
Common Mistakes: “Eachother” vs “Each Other”

Many learners—and even native speakers—confuse the spelling. The main mistake is writing “eachother” as one word.
Why it’s wrong:
- English grammar rules treat “each” and “other” as two separate words.
- “Each” modifies “other,” meaning “every individual in the group with respect to the others.”
Incorrect:
- They hugged eachother warmly.
- We should help eachother in tough times.
Correct:
- They hugged each other warmly.
- We should help each other in tough times.
Tip: If you can split the words without changing the meaning, it’s likely correct.
Grammar Rules for Using “Each Other”

Here’s a simple grammar guide for “each other”:
- Always two words – never combine them.
- Reciprocal action – it shows that two or more people act on one another.
- Not for single subjects – use it only when more than one entity is involved.
Sentence structures:
- Subject + verb + each other
- They admire each other.
- They admire each other.
- Subject + verb + object + each other
- The team members support each other during practice.
- The team members support each other during practice.
Key tip: If the sentence describes a one-way action, don’t use “each other”.
Examples of Correct Usage in Sentences

Using examples is the best way to understand. Here’s a collection:
- Sarah and Tom smiled at each other across the room.
- The children helped each other with their homework.
- During the debate, the candidates criticized each other politely.
- Friends often confide in each other about personal problems.
- The two companies collaborate with each other for better results.
Notice how “each other” is always two words and shows a mutual action.
Incorrect Usage and How to Fix It

Many ESL learners make these errors:
Mistake 1: Using “eachother” as one word
- They respect eachother. → ❌
- They respect each other. → ✅
Mistake 2: Using it with a single subject
- John loves each other. → ❌ (only one person)
- John and Mary love each other. → ✅
Mistake 3: Confusing with “one another”
- The students looked at each other. → ✅ (2–3 people)
- The students looked at one another. → ✅ (more formal, can imply larger groups)
Tip: Always check if the action is mutual and involves more than one person.
How Native Speakers Use “Each Other”

Native speakers consistently write it as two words. Even in casual texts, blogs, and social media posts, you’ll rarely see “eachother” correctly used as one word.
Real-world examples from native usage:
- We text each other every day.
- The twins know each other so well.
- They congratulated each other after the performance.
Native usage reinforces the two-word rule and emphasizes clarity.
Differences Between “Each Other” and “One Another”

While both show reciprocity, subtle differences exist:
| Feature | Each Other | One Another |
| Typical use | Usually two people | Can be two or more people |
| Formality | Informal to neutral | Slightly more formal |
| Examples | They respect each other. | The committee members help one another. |
Rule of thumb: Use each other for casual or two-person contexts, and one another when writing formally or talking about larger groups.
Synonyms and Alternative Phrases for “Each Other”

Sometimes, you might want variety in writing. Here’s a handy table:
| Synonym / Phrase | Example Sentence |
| One another | The students helped one another with homework. |
| Mutually | They mutually agreed on the rules. |
| Reciprocally | The countries supported each other reciprocally. |
| Together | They worked together to finish the project. |
| In turn | They complimented each other in turn. |
Using alternatives can make writing richer, but remember: “each other” is the most common choice.
Idioms and Expressions Involving “Each Other”

Here are some idiomatic uses:
- Eye to eye with each other – agreeing
- They saw eye to eye with each other on the project.
- They saw eye to eye with each other on the project.
- Lean on each other – rely for support
- During tough times, friends lean on each other.
- During tough times, friends lean on each other.
- At odds with each other – in disagreement
- The two teams were at odds with each other throughout the match.
- The two teams were at odds with each other throughout the match.
These expressions highlight how “each other” naturally fits in everyday English.
Practical Tips for Remembering the Correct Spelling
- Two words, always – break it into “each” + “other” in your mind.
- Mutual action check – ask yourself, “Are they doing this to one another?”
- Avoid shortcuts – no “eachother” in formal or informal writing.
- Read aloud – if it sounds like “each other,” write it as two words.
- Use alternatives if needed – one another, mutually, or together.
Memory trick: Think “each” = every individual, “other” = the rest. Together → each other.
Frequently Asked Questions About “Each Other”
Q1: Can I write “eachother” in informal texts?
No, even in casual writing, the correct spelling is each other. Using “eachother” looks like a typo.
Q2: Is “each other” only for people?
Not necessarily. You can use it for objects or animals when they act mutually: The cats groom each other.
Q3: Can I replace “each other” with “one another”?
Yes, especially in formal writing or larger groups. Both show reciprocal action.
Q4: How do I remember it’s two words?
Split it mentally: “each” (every individual) + “other” (the rest). If it makes sense, it’s correct.
Q5: Are there idioms with “each other”?
Yes, common ones include lean on each other, at odds with each other, and see eye to eye with each other.
Conclusion
Spelling “each other” correctly is simple once you remember: two words, mutual action, two or more participants. Avoid the common mistake of combining it into “eachother”. Whether writing essays, emails, or casual messages, using each other correctly improves clarity and shows attention to detail.
For variety, remember alternatives like one another, mutually, or together, and sprinkle idioms naturally to enrich your English. With these tips, you’ll confidently master the correct usage of each other in all contexts.

Thomas Hardy is a passionate innovator and thoughtful leader, dedicated to transforming ideas into lasting success. With creativity and purpose, he brings vision and authenticity to everything he does.